/*!
 * \file serial/impl/windows.h
 * \author  William Woodall <wjwwood@gmail.com>
 * \author  John Harrison <ash@greaterthaninfinity.com>
 * \version 0.1
 *
 * \section LICENSE
 *
 * The MIT License
 *
 * Copyright (c) 2012 William Woodall, John Harrison
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 *
 * \section DESCRIPTION
 *
 * This provides a windows implementation of the Serial class interface.
 *
 */

#if defined(_WIN32)

#ifndef SERIAL_IMPL_WINDOWS_H
#define SERIAL_IMPL_WINDOWS_H

#include "serial/serial.h"

#include "windows.h"

namespace serial {

	using std::string;
	using std::wstring;
	using std::invalid_argument;

	using serial::SerialException;
	using serial::IOException;

	class serial::Serial::SerialImpl {
	public:
		SerialImpl(const string &port,
			unsigned long baudrate,
			bytesize_t bytesize,
			parity_t parity,
			stopbits_t stopbits,
			flowcontrol_t flowcontrol);

		virtual ~SerialImpl();
		void open();
		void close();
		bool isOpen() const;
		size_t available();
		bool waitReadable(uint32_t timeout);
		void waitByteTimes(size_t count);
		size_t read(uint8_t *buf, size_t size = 1);
		size_t write(const uint8_t *data, size_t length);
		void flush();
		void flushInput();
		void flushOutput();
		void sendBreak(int duration);
		void setBreak(bool level);
		void setRTS(bool level);
		void setDTR(bool level);
		bool waitForChange();
		bool getCTS();
		bool getDSR();
		bool getRI();
		bool getCD();
		void setPort(const string &port);
		string getPort() const;
		void setTimeout(Timeout &timeout);
		Timeout getTimeout() const;
		void setBaudrate(unsigned long baudrate);
		unsigned long getBaudrate() const;
		void setBytesize(bytesize_t bytesize);
		bytesize_t getBytesize() const;
		void setParity(parity_t parity);
		parity_t getParity() const;
		void setStopbits(stopbits_t stopbits);
		stopbits_t getStopbits() const;
		void setFlowcontrol(flowcontrol_t flowcontrol);
		flowcontrol_t getFlowcontrol() const;
		void readLock();
		void readUnlock();
		void writeLock();
		void writeUnlock();

	protected:
		void reconfigurePort();

	private:
		string port;
		wstring port_;               // Path to the file descriptor
		HANDLE fd_;

		bool is_open_;

		Timeout timeout_;           // Timeout for read operations
		unsigned long baudrate_;    // Baudrate

		parity_t parity_;           // Parity
		bytesize_t bytesize_;       // Size of the bytes
		stopbits_t stopbits_;       // Stop Bits
		flowcontrol_t flowcontrol_; // Flow Control

		// Mutex used to lock the read functions
		HANDLE read_mutex;
		// Mutex used to lock the write functions
		HANDLE write_mutex;
	};

}

#endif // SERIAL_IMPL_WINDOWS_H

#endif // if defined(_WIN32)
